#4378CF#4378CF

#4378CF is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.146 H 259.8°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#4378CF
RGB	rgb(67, 120, 207)
HSL	hsl(217, 59%, 54%)
HSV	hsv(217, 68%, 81%)
CMYK	cmyk(67.6%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.84, 10.73, -50.21)
CIE-LCH	lch(50.84, 51.35, 282.06°)
OKLab	oklab(57.94% -0.0258 -0.1433)
OKLCH	oklch(57.94% 0.146 259.8)
XYZ	xyz(20.2897, 19.1292, 61.6424)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378CF #CF9A43

analogous

#43BECF #4378CF #5443CF

triadic

#4378CF #CF4378 #78CF43

tetradic

#4378CF #CF43BE #CF9A43 #43CF54

square

#4378CF #CF43BE #CF9A43 #43CF54

split-complementary

#4378CF #CF5443 #BECF43

monochromatic

#1F4179 #2B5BAA #4378CF #749BDB #A5BEE8

Accessibility & contrast

On white

4.35

#4378CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#4378CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378CF

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378CF	#FFFFFF	#000000	##000000
##4378CF	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F80D2

Deuteranopia (green-blind)

#3873CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4378cf;
/* rgb */ color: rgb(67, 120, 207);
/* oklch */ color: oklch(57.9% 0.146 259.8);

Tailwind

colors: {
  custom: {
    50: '#869ede',
    500: '#4378cf',
    950: '#000000',
  },
}

SCSS

$custom: #4378cf;
$custom-light: #869ede;
$custom-dark: #000000;

JSON

{
  "hex": "#4378cf",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 217.286,
    "s": 59.322,
    "l": 53.725
  },
  "oklch": {
    "l": 0.57944,
    "c": 0.14562,
    "h": 259.8
  },
  "luminance": 0.19131
}

Semantic roles & 50–950 ramp

primary

#4378CF

secondary

#D5BE99

accent

#A745E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4378CF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →